1. A military slang used to describe a soldier who lacks organizational skills, which is partially interchangable with soup. Soup sandwich typically is used for more serious levels of unsatisfactory performance, while ate up is used more frequently.

Synonyms: Soup Sandwich, Soup

2. The feeling of hangover experienced following the use of the illicit substance, MDMA, known on the streets as ecstasy.

The hangover period after coming down off of the club drug ecstasy. There is debate as to when exactly the ate up period starts, but generally it happens right after the first short sleep period after coming down.

This state is characterized by an overall 'fuzzy' head feeling as if your skull was filled to the brim with a mass of wet cotton balls. Mild headache is also common along with general stiffness and muscle/joint aches if one was dancing for long periods of time. Users who frequent clubs during intoxication also frequently get 'beat' after effects, hearing snippets and pieces of the music they were listening to during the peak time of the high.

Origins of the term are unclear, but in the EDM scene, strong evidence points towards either the state of Florida or Texas coining the term, with Florida the more probable place (8up.com is a storied rave/party website for Central and South Florida).

The nasty appearance people take on after using meth for a while. Includes sores and scabs on the face and possibly all over the body. Generally "ate up" looking people look like they haven't eaten or slept in weeks and could use a good wash.

Have you seen your ex-girlfriend lately? That girl is looking hella ate up!